module.exports = {
    getName: function() {
        var a = 10;
        var a = 11;
        console.log(a)
        return "chong"
    },
    getAge: function() {
        return 27
    },
    letTest: function() {
        var [x, y, z] = new Set(["a", "b", "c"]);
        console.log(x)
    }
}